# Cumulative heat injected for steam drive - Myhill and Stegemeier

## Input(s)

\(w_{i}\): Mass Rate of Injection of Steam into Reservoir (lb/d)

\(c_{w}\): Average Specific Heat (BTU/lb K)

\(\Delta \mathrm{T}\): Temperature Differential \((\mathrm{K})\)

\(f_{s d h}\): Steam Quality (fraction)

\(L_{v d h}\): Latent Heat of Steam (BTU/lb)

## Output(s)

\(Q_{i}\): Heat Injection Rate (BTU/d)

## Formula(s)

\[
\mathrm{Q}_{\mathrm{i}}=\mathrm{w}_{\mathrm{i}} *\left(\mathrm{c}_{\mathrm{w}} * \Delta \mathrm{T}+\mathrm{f}_{\mathrm{sdh}} * \mathrm{~L}_{\mathrm{vdh}}\right)
\]

## Reference(s)

Prats, M. 1986. Thermal Recovery. Society of Petroleum Engineers, New York, Chapter: 7, Page: 76.